Hair grafting is often applied to fix gaps in your models own hair. This can occur when the hair is pulled back and in the fringe. Remedy this by applying the Lasso tool around your borrowed area, copy, paste and place into your new area. The Transform>Warp tool will help you reshape accordingly and Curves can be applied to colour correct.
Eyebrow grafting isn’t totally dissimilar from the previous techniques. Again use the Lasso tool to select copy and pasted replaced elements. Also set blending mode to Darken to integrate any skin edges, further enhancing with an applied Layer Mask. The Warp tool should once again be applied to transform shape and direction. The CS6 Liquify tool could also be useful here.
This technique takes a little more time that the others, as you work individually with separate eyelashes. Copy and paste adjacent lashes, repositions along the lip of the eyelid, and again set the layer blending mode to Darken. You can quickly edit existing skin fringes with a small soft erasure tool.